Это очень срочно (0.8+(-1/6))+(-2 1/3)

Question

Это очень срочно
(0.8+(-1/6))+(-2 1/3)

Answer 1

(0,8+(-1/6))+(-2 1/3)=
=(4/5-1/6)+(-2 1/3) =
= (24/30-5/30)-2 1/3=
= 19/30-2 1/3=
= 19/30-2 10/30=
= –(2 10/30 - 19/30) =
= – (1 40/30 - 19/30) =
= – 1 21/30 = -1 7/10 = -1,7